Optical Transitions and Internal Vibronic Frequencies of MnF62- Ions in Cs2SiF6 and Cs2GeF6 Red Phosphors

被引：61

作者：

Arai, Yusuke ^{[1
]}

Adachi, Sadao ^{[1
]}

机构：

[1] Gunma Univ, Grad Sch Engn, Kiryu, Gunma 3768515, Japan

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2011年 / 158卷 / 06期

关键词：

LIGHT-EMITTING-DIODES; LATTICE-DYNAMICS; VIBRATIONAL-SPECTRA; ABSORPTION-SPECTRUM; CRYSTAL-STRUCTURE; EMISSION; 2-PHOTON; STATE; EFFICIENT; FLUORIDE;

D O I：

10.1149/1.3576124

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Cs2SiF6:Mn4+ and Cs2GeF6:Mn4+ red phosphors are synthesized by chemically etching Si and Ge in aqueous HF/CsMnO4 solutions. Photoluminescence (PL) analysis, PL excitation (PLE) spectroscopy, and Raman scattering techniques are used to investigate the optical properties of the phosphors. The Franck-Condon analysis of the PLE data yields the Mn4+-related optical transitions to occur at similar to 2.39 and similar to 2.35 eV ((4)A(2)-> T-4(2)) and at similar to 2.82 and similar to 2.79 eV ((4)A(2)-> T-4(1)) for Cs2SiF6:Mn4+ and Cs2GeF6:Mn4+, respectively. Temperature-dependent PL measurements are performed from 20 to 450 K in increments of 10 K, and the obtained results are well interpreted by taking into account the Bose-Einstein occupation factor. A complete set of infrared and Raman active frequencies, v(1)-v(6), are determined from the PL and Raman scattering spectra of Cs2SiF6:Mn4(+) and Cs2GeF6:Mn4(+). (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3576124] All rights reserved.

引用

页码：J179 / J183

页数：5

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